JPH0219529Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The invention relates to an engine oil supply device.
To provide a device which is safe and eliminates oil stains without causing oil to splash out even when oil is replenished during driving.

<Prior art and its problems> For example, a dual flywheel type gas engine is often operated continuously to perform work, but when replenishing oil, the operation must be stopped and inspected each time. Since it had to be done after oiling, continuous operation for a long time was not possible.

This is because if you replenish oil during operation, especially in single-cylinder engines, the pulsating pressure effect caused by the vertical movement of the piston is large, so mist in the crank chamber may blow out, contaminating the surrounding area, or creating a fire hazard. It was because of that.

The technical challenge of this invention is to safely replenish oil even during continuous engine operation.

<Means for Solving the Problems> Means for achieving the above-mentioned problems will be described below with reference to FIGS. 1 to 9, which correspond to embodiments.

That is, in the present invention, the oil supply cylinder 3 is inserted from the crank chamber 1 of the engine E toward the oil pan 2, and the upper end 3a of the cylinder 3 is placed outside the engine E, and the lower end 3b is placed outside the engine E. They are each positioned in the oil pan 2, and the upper end 3a of the cylinder is formed to be openable and closable with a cap 6, so that the oil passage 4 in the cylinder 3 and the oil pan 2 are communicated under the oil surface near the lower end 3b of the cylinder 3. It is characterized in that an oil passage hole 5 is formed in the oil passage hole 5, and the passage cross-sectional area B of the oil passage hole 5 is narrowed down to be smaller than the passage cross-sectional area A of the cylindrical oil passage 4.

<Function> Passage cross-sectional area B of the oil passage hole 5 of the oil supply cylinder 3
is narrowed down to be smaller than the passage cross-sectional area A of the cylinder passage 4, so even if the pressure in the crank chamber increases due to pulsation, the oil passage hole 5, which has high passage resistance and is always under the oil level,
It is difficult for oil to flow into the cylindrical oil passage 4 from the cylindrical oil passage 4, thereby preventing oil from spouting out of the cylindrical body from the cylindrical oil passage 4.

<Effect of the invention> Even if oil is supplied from the oil supply cylinder while the engine is running, the oil will not spout outward from the cylinder oil passage, which could stain the area around the engine or cause a fire. You can smoothly solve the problem.

<Example> Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 is a cutaway right side view of essential parts of a horizontal engine showing the first embodiment, and FIG. A piston 12 is fitted into the cylinder 11 so as to be horizontally slidable.

A cylinder head 13 is assembled in front of the cylinder block 10, an air cleaner is attached to the intake port formed in the cylinder head 13, and a muffler 12 is attached to the exhaust port.

A radiator 14 is placed above the cylinder block 10.
is installed, and the water jacket provided in the cylinder block 10 is communicated with the heat dissipation pipe of the radiator.

An oil pan 2 is formed below a crankcase 15 of an engine E, and its rear opening is removably sealed with a rear cover 16.

An oil supply cylinder 3 is separately screwed and fixed to the upper wall 17 of a crankcase 15, and the main body is disposed so as to extend from the crank chamber 1 to the oil pan 2.

The oil replenishing cylinder 3 is a long cylindrical body as a whole, and a cap 6 is removably screwed onto its upper end 3a to enable oil replenishment.

The lower end 3b of the cylindrical body 3 is positioned in the oil pan 2, and the lower end opening is closed to form the entire interior of the cylindrical body as a cylindrical oil passage 4. Four oil passage holes 5 are made in the wall below the lowest oil level in a state perpendicular to the cylindrical oil passage 4 and so as to divide the circumference into four equal parts.

At this time, the passage cross-sectional area B of the oil passage 5 is narrowed down to be smaller than the passage cross-sectional area A of the cylindrical oil passage 4 to increase passage resistance.

Incidentally, an oil level gauge 18 is attached between the rear cover 16 and the oil pan 2.

That is, an oil level gauge 18 is removably attached between an oil inlet 19 provided in the oil pan 2 and a vent 20 provided above the rear cover 16, so that the oil level in the oil pan 2 can be checked during engine operation. It should also be easily visible from the outside.

FIG. 3 shows a second embodiment of the present invention, and shows the first embodiment of the invention.
Instead of the embodiment in which the cylinder body 3 for oil replenishment is separately fitted and fixed into the crankcase 15, in this embodiment, the oil supply cylinder 3 is separately fitted and fixed from the rear cover 16 toward the oil pan 2.

As shown in FIG. 4, the lower end 3b of the oil supply cylinder 3 is narrowed in the height direction of the cylinder oil passage 4 to form an oil passage hole 5, and the opening shape of the oil passage hole 5 is When viewed from below, as shown in FIG. 5, it is in the form of a straight line that traverses the radial direction of the cylinder.

FIG. 6 shows a modification of the oil passage hole 5, which is opened radially in three directions from the center of the cylinder.

On the other hand, FIG. 7 shows a third embodiment of the present invention, in which the lower end of the oil supply cylinder 3 is deformed into an inverted T shape,
The oil passage 5 is formed by forming an oil passage projecting in a direction perpendicular to the cylindrical oil passage 4 to have a small diameter.

In this case, the total cross-sectional area of the left and right oil holes 5 is smaller than the cross-sectional area of the cylindrical oil passage 4.

FIG. 8 shows a fourth embodiment of the present invention, in which a small-diameter pipe 7 oriented perpendicular to the length direction of the cylinder passage 4 is installed near the lower end of the oil supply cylinder 3, Both ends 7a of the pipe 7 are arranged outside the cylindrical body, and an oil passage hole 5 is formed in the wall of the pipe 7 facing the cylindrical body oil passage 4.

FIG. 9 shows a fifth embodiment of the present invention, in which an oil supply cylinder 3 is integrally formed with a crankcase 15.

The functions of the present invention will be described below.

When the cap 6 is removed from the oil supply cylinder 3 and oil is supplied, the oil guided downward through the cylinder oil passage 4 is supplied to the oil pan 2 through the oil passage hole 5.

Since the oil passage hole 5 is immersed in the oil stored in the oil pan 2, the oil mist in the crank chamber 1 does not directly spray out from the oil passage hole 5 into the cylindrical oil passage 4.

Furthermore, even if the inside of the crank chamber 1 becomes positive pressure due to pulsation, the passage resistance of the oil passage hole 5 is large, so it is difficult for oil to escape through the oil passage hole 5 into the cylindrical oil passage 4. be.

[Brief explanation of the drawing]

1 to 9 show embodiments of the present invention, FIG. 1 is a cutaway right side view of essential parts of a horizontal engine showing the first embodiment, and FIG. 2 is a vertical cross-sectional view of the lower part of the oil supply cylinder. , FIG. 3 is a diagram corresponding to FIG. 1 showing the second embodiment,
4 is a view equivalent to FIG. 2 showing the same embodiment, FIG. 5 is a bottom view of the cylinder body showing the same example, and FIG. 6 is a view equivalent to FIG. 7 is a diagram equivalent to FIG. 2 showing the third embodiment, FIG. 8 is a diagram equivalent to FIG. 2 showing the fourth embodiment, and FIG. 9 is a diagram equivalent to FIG. 1 showing the fifth embodiment. 1...Crank chamber, 2...Oil pan, 3...
Oil supply cylinder, 3a...Top end of 3, 3b...
Lower end of 3, 4... Cylindrical oil passage, 5... Oil passage hole, 6...
...cap, 7...pipe, 7a...one end of 7,
A... Passage cross-sectional area of 4, B... Passage cross-sectional area of 5.

Claims (1)

[Scope of claim for utility model registration] 1 From crank chamber 1 to oil pan 2 of engine E
Insert the oil replenishment cylinder 3 toward
The lower ends 3b of the cylinders are positioned in the oil pan 2, and the upper ends 3a of the cylinders are formed to be able to be opened and closed with a cap 6.
An oil passage hole 5 is formed so as to communicate between the oil passage 4 in the cylinder and the oil pan 2, and the passage cross-sectional area B of the oil passage hole 5 is narrowed down to be smaller than the passage cross-sectional area A of the cylindrical oil passage 4. Engine oil supply device. 2. The oil supply device for an engine according to claim 1, wherein the oil passage hole 5 is provided perpendicularly to the length direction of the cylindrical oil passage 4. 3 A pipe 7 oriented perpendicular to the length direction of the cylinder oil passage 4 is installed near the lower end of the oil supply cylinder 3, and at least one end 7a of the pipe 7 is arranged outside the cylinder, so that the cylinder oil Pipe 7 facing road 4
An oil replenishing device for an engine according to claim 1, characterized in that an oil passage hole 5 is formed in the wall of the engine. 4. The oil replenishing device for an engine according to claim 1, 2 or 3, characterized in that the oil replenishing cylinder 3 is fitted and fixed separately into the crankcase 1. 5. The oil replenishing device for an engine according to claim 1, 2 or 3, characterized in that the oil replenishing cylinder 3 is integrally formed with the crankcase 1.